Leyman Hide-A-Way LHS2500, Installation Manual

Page: 18 / 22

Page 18
TROUBLE SHOOTING CHART LHS & LLBS
PROBLEM POSSIBLE CAUSE SOLUTION
The motor is running but the
platform will no go up, or
reach floor of vehicle or gate
will not lift rated load. 1. Insufficient oil in power
unit tank
2. Lowering valve is stuck
partially or fully open.
3. Power unit relief valve is
set too low.
1. Fill tank
2. Clean or replace
3. Check and adjust
pressure. Do not exceed
2500 psi.
The platform will not go up
or reach floor level and the
motor does not run. 1. Battery is low
2. Power line is loose
3. Poor switch connections
4. Cab switch is turned off
5. Defective starter
solenoid
6. Tripped circuit breaker
1. Recharge battery
2. Check the connections, if
loose tighten. Also check
for corrosion and clean if
necessary
3. See #2
4. Turn switch on
5. Replace part
6. Reset the circuit breaker
Platform will not lower 1. Battery is low
2. Bad ground or electrical
connection
3. Lowering valve is bad
1. Recharge battery
2. Check for corrosion and
tighten
3. Check the coil
Platform creeps downward 1. Defective cylinder or
piston seal
2. Lowering valve is not
seating or partially open
1. Remove vent line
activate to see if there is
a continuous flow of oil
2. Clean and inspect
Platform goes down slowly 1. Lowering valve not fully
open or clogged
2. Lines are restricted or
flow control is clogged
1. Clean or replace the
lowering valve
2. Check for bent or
pinched lines. Clean or
replace the flow control.
Bent latch pin 1. Latch block welded too
far from the latch pin –
allowing mechanism to
bounce
2. Cylinder leaking
1. Weld block 1/16 away
from pin
2. Remove vent line,
activate to see if there is
a continuous flow of oil
Hydraulic oil leak from
cylinder rod end. 1. Worn seal
2. Cylinder rod pitted 1. Replace seals in cylinder
2. Replace cylinder